ARM: EXYNOS: Move pmu specific headers under "linux/soc/samsung"

Moving Exynos PMU specific header file into "include/linux/soc/samsung"
thus updated affected files under "mach-exynos" to use new location of
these header files.

Signed-off-by: Amit Daniel Kachhap <amitdanielk@gmail.com>
[tested on Peach-Pi (Exynos5880)]
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
[for testing on Trats2 (Exynos4412) and Odroid XU3 (Exynos5422)]
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c
index 5697819..f086bf6 100644
--- a/arch/arm/mach-exynos/mcpm-exynos.c
+++ b/arch/arm/mach-exynos/mcpm-exynos.c
@@ -16,13 +16,13 @@
 #include <linux/io.h>
 #include <linux/of_address.h>
 #include <linux/syscore_ops.h>
+#include <linux/soc/samsung/exynos-regs-pmu.h>
 
 #include <asm/cputype.h>
 #include <asm/cp15.h>
 #include <asm/mcpm.h>
 #include <asm/smp_plat.h>
 
-#include "regs-pmu.h"
 #include "common.h"
 
 #define EXYNOS5420_CPUS_PER_CLUSTER	4